Chapter 7、面向对象（四）--- 多态

接口

package org.hanqi.pn0120;

public class Computer 
{
    //品牌
    private String brand;
    //CPU
    private ICPU cpu;
    //显卡
    private IDisplayCard displaycard;
    
    
    public String getBrand() {
        return brand;
    }
    public void setBrand(String brand) {
        this.brand = brand;
    }
    public ICPU getCpu() {
        return cpu;
    }
    public void setCpu(ICPU cpu) {
        this.cpu = cpu;
    }
    public IDisplayCard getDisplaycard() {
        return displaycard;
    }
    public void setDisplaycard(IDisplayCard displaycard) {
        this.displaycard = displaycard;
    }
    
    //运行
    public void run()
    {
        this.cpu.command();
        this.displaycard.display();
        System.out.println("我组装的"+brand+"电脑开始运行");
    }
    
    public Computer(String brand) {
        super();
        this.brand = brand;
    }

    public static void main(String []args)
    {
        //组装电脑
        Computer c1=new Computer("hp");
        
        //第一种：匿名类 new AMD()
        c1.setCpu(new AMD());
        //第二种：
        AMD a1=new AMD();
        c1.setCpu(a1);
        
        c1.setDisplaycard(new Nivida());
        
        c1.run();
        
        
        Computer c2=new Computer("ASUS");
        c2.setCpu(new Intel());
        c2.setDisplaycard(new Ati());
        c2.run();
        System.out.println("------------------");
        
        AMD2 a2=new AMD2();
        Computer c3=new Computer("acer");
        c3.setCpu(a2);
        c3.setDisplaycard(a2);
        c3.run();
        System.out.println("------------------");
        
        AMD3 a3=new AMD3();
        Computer c4=new Computer("acer");
        c4.setCpu(a3);
        c4.setDisplaycard(a3);
        c4.run();
    }

}

package org.hanqi.pn0120;
//CPU接口
public interface ICPU 
{
    //控制
    public void command();
}

package org.hanqi.pn0120;
//显卡接口
public interface IDisplayCard 
{
    //显示
    public void display();

}

package org.hanqi.pn0120;

public class Intel implements ICPU {

    @Override
    public void command() 
    {
        System.out.println("我是Interl的CPU");

    }

}

package org.hanqi.pn0120;

public class AMD implements ICPU 
{

    @Override
    public void command() 
    {
        System.out.println("我是AMD的CPU");

    }

}

package org.hanqi.pn0120;

public class Nivida implements IDisplayCard {

    @Override
    public void display() 
    {
        System.out.println("我是N显卡");

    }

}

package org.hanqi.pn0120;

public class Ati implements IDisplayCard {

    @Override
    public void display() 
    {
        System.out.println("我是A显卡");

    }

}

package org.hanqi.pn0120;

public class AMD2 implements ICPU, IDisplayCard {

    @Override
    public void display() 
    {
        System.out.println("AMD的CPU显卡");

    }

    @Override
    public void command() 
    {
        System.out.println("AMD自带显卡的CPU");

    }

}

package org.hanqi.pn0120;

public class AMD3 extends AMD implements IDisplayCard {

    @Override
    public void display() {
        // TODO 自动生成的方法存根
        System.out.println("继承了AMD一代的CPU，增加了显卡功能");

    }

}